A/N: Hi! This is just a random idea I had. I haven't read the Harry Potter books for awhile and I don't claim to be a Fullmetal Alchemist expert because I've only seen the original anime and a few episodes of brotherhood, so if you notice anything that isn't completely cannon in either universe please let me know. Ed might seem a bit out of character but please note that he's had ten years to change in this story so while he'll still be the same Ed we know and love he's also going to be a bit different. Also note that in this story Conqueror of Shamballa never happened and alchemy can be used on Earth.
It was kind of ironic. The very magic he had originally refused to have anything to do with was going to be his ticket home. Using alchemy he could open the gate and using magic he could bypass the equivalent exchange the gate would demand from him for passing through. He was just finishing the last lines of the array.
"We'll miss you," Hermione said.
Edward looked up and smiled. "I've made some great friends here but I need to go back to Amestris and see Alphones. I don't even know if my attempt to bring him back to life worked or not," his gold eyes lit up with determination. "I need to know that he's alive."
"It's been ten years since you last saw him and you still care this much about him. That's amazing," Ginny turned to look at Ron. "How come you don't care that much about me Ron?"
"What,…I do. Geez have a little faith in me," Ron muttered.
Ed laughed, finished up the last line of the array and brushed the chalk dust of his hands. He looked at everyone who had come to say goodbye. Harry, Ron, Hermione, Ginny, the rest of the Weaslys, and the remains of the Order. All his other friends in this world had died in the final battle with Voldemort.
The people who had come to say goodbye were still a little shocked he was actually leaving.
Molly couldn't help but remember when she had found him collapsed outside the burrow, wearing nothing except a tattered pair of pants and covered in strange markings that, when he had the opportunity to look at them, Dumbledore hadn't been able to decipher. Well she had done what any mother would have done and brought him inside. The children had returned to Hogwarts after the Christmas break and Arthur was still at St. Mungos so there was plenty of room.
The next day he had woken up and she had discovered that he didn't speak a word of English. The next week Arthur had returned home, and to her surprise the boy was speaking English, (not very well but enough to communicate) claiming that he had been listening to her all week and had pieced a bit of the language together. They found out that his name was Edward Elric.
When Ed saw Molly do magic his temper had been revealed for the first time. He had yelled about something in his own language and stormed off. Later he had apologized and simply told her that it seemed unfair that he had to suffer so much when there were people who could make impossible things happen just by waving a stick. At that time Molly had not understood what he meant but had accepted his apology either way.
Well the kids had come home for summer break and by then Ed was fluent in English. They came to know him and while they thought he was a bit odd, they became friends.
No one had been more shocked than Ed when his Hogwarts letter had come. But he shocked everyone else by agreeing to go.
He was introduced to Harry and Hermione. He and Hermione had got along immediately but Harry had taken a bit longer to come around. However by the end of the year Ed was considered a close friend of everyone in the trio.
It was a good thing to because it was universally accepted that they wouldn't have been able to find and destroy all the horcruxes without him. And that a lot more lives would have been lost in the final battle if it hadn't been for his alchemy.
It had shocked everyone when Ed had charged straight into a mass of death-eaters with his wand in his pocket. He had clapped then hit the ground and several hands had pushed out of the ground and trapped all of them. He had dodged several curses and fought off several death-eaters using the same technique.
At the end of the battle everyone had been so relieved that they had forgotten to question him about it. But later the remaining members of the order, the ministry, and his friends had all wanted to know how he had done it.
The ministry was told that it was just a form of wandless transfiguration. To the order and his friends he told the truth about alchemy and his own world. They learned about his failed attempts at human transmutation, his brother, and his desire to return to his world. They hadn't believed him at first. And while he had been disappointed they didn't believe him, he could understand their reasons. He told them that he was going to find a way to get back to his world, and now that Voldemort was defeated he was going to dedicate his life to his research.
For a few years he just disappeared from everyone's life. Rebuilding what was left of the ministry and recovering from all of Voldemort's attacks seemed more important so no one took the time to look for him. But he had made an appearance at Harry and Ginny's wedding. After not seeing him for three years, it seemed like people wanted to speak to him and hear about him more than they did the bride and groom. He had congratulated Harry and Ginny as well as Ron and Hermione on their marriage, answered a few questions, spoke to a few people and then he had just disappeared for another year.
Then he made a sudden reappearance in everyone's life claiming that he probably wasn't going to be 'in this world much longer'. He still researched obsessively but he also took the time to spend time with his friends and their families. They didn't think he would ever actually leave.
And now he was leaving, going back to his world. It was hard to believe.
"I'm going to miss all of you," he said his golden eyes filled with emotion. "Thank you for all your help. If it wasn't for your magic I would still have no idea how to get home."
Molly ran up and hugged him. "We should be thanking you dear. If it wasn't for all your help Voldemort might still be running rampant."
Ed smiled. Everyone came up and said goodbye to him. They laughed and joked, and spoke of all the experiences they'd had together.
Then Edward, walked into the middle of the array, cast a spell, and then clapped and pressed his hands onto the array. A giant gate opened and thousands of black hands came out and grabbed onto various parts of his body and pulled him in. The gate then disappeared, along with Edward.
"I hope he made it," Harry whispered.
Edward Elric, the Fullmetal Alchemist, and Hero of the People sat up, and looked at the ruins of the ancient hidden city under central. He'd done it! He was home!
A/N: Just to clarify the Harry Potter timeline
Ed's first year-A mixture of books five and six. Ed's found by Molly and he goes to Hogwarts with the trio in their sixth year.
Ed's second year- He helps find the horcruxes and fights in the final battle at Hogwarts.
Ed's third-fifth year- He's off researching ways to get home and doesn't have any contact with any of the wizards.
Ed's sixth year- Sometime in here Harry and Ginny and Hermione and Ron get married. He visits and then disappears to do more research.
Ed's seventh-tenth year- He's still researching but because he knows that he's close to getting home he decides to spend time with his friends before he leaves. Sometime during this time he manages to convince everyone that his story is real.
This is very rushed and I know that but it's just the prologue. The majority of this story is going to be Ed being reunited with everyone in Amestris and their reactions to his magic. Questions, comments, concerns, please review.